Camp Kill (26 pages, at DriveThruRPG) is a fun horror adventure for Call of Cthulhu in the year 1988, and I used the sixth edition of that ruleset. To create my solo engine, I changed four lines in Dark Conspiracy Dark Races, Volume 1 (106 pages, same place). I used the five characters that are included in the module, but I did make some changes so that they could fight better.

So, the adventure starts off with three dead bodies and a missing director at a film set (location one). Thirty minutes later they were in a combat with a cultist. They severely wounded him and tried to take him to get medical attention. He died ten minutes later. The PCs went back to the “trail” to find the missing director. At location three they acquired an alien “pet”. At location four, the pet attacked a generator. At location five, they discovered a buried alien ship. In the center of the ship, they encountered four more cultists and the insane movie director. This was a bloody battle. The PC student, Josh was killed along with the PC actress Lynda. The PC team did kill the opposing team. At this point, the “pet” that had witnessed the violence and blood, transformed into a beast that attacked the remaining three PCs. The PCs killed it. The PCs alerted the authorities and the Men In Black arrived and took control of the situation. Give this adventure a try!